<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>
:hover {}
</style>
<style>
#pseudo1::before {}
</style>
<style>
#pseudo2:not([hidden]) {}
</style>
<style>
#pseudo3:not(blockquote) {}
</style>
<style>
[id="pseudo4"]:not([hidden]) {}
</style>
<style>
[id="pseudo5"]:not(blockquote) {}
</style>
<style>
#pseudo6 :nth-of-type(1) {}
</style>
<style>
#pseudo7 :nth-of-type(2) {}
</style>
<style>
:root > body > #pseudo8 {}
</style>
<style>
:root > #pseudo9 {}
</style>
<style>
:scope > body > #pseudo10 {}
</style>
<style>
:scope > #pseudo11 {}
</style>
</head>
<body>
<blockquote id="pseudo1"></blockquote>
<blockquote id="pseudo2"></blockquote>
<blockquote id="pseudo3"></blockquote>
<blockquote id="pseudo4"></blockquote>
<blockquote id="pseudo5"></blockquote>
<div id="pseudo6">
  <blockquote></blockquote>
</div>
<div id="pseudo7">
  <blockquote></blockquote>
</div>
<div id="pseudo8"></div>
<div id="pseudo9"></div>
<div id="pseudo10"></div>
<div id="pseudo11"></div>
</body>
</html>
